If I'm understanding the description (haven't played with this feature yet), in addition to the general "blur the background" capability that's been around for a while with digital processing, you'll also be able to choose how the thickness of the focal plane, which is what I meant when I said depth of field (hope I'm using the right terms)... say you took a photo of a rosebush in the garden, and all of it's in pretty good focus... You could blur the garden in the background and focus on the whole rosebush, or you could focus one rose in the foreground and blur everything behind it.
Sharpening focus is a limited function -- you can sharpen an image a little, but if it's out of focus when the camera took the shot, you're never going to get a lovely crisp image. DE-focusing, on the other hand, can be done to any image, in whole or in part, and the control over doing this seems to be much better in the latest software.
I've never ponied up for photoshop ($$$), but I really like Paintshop. The version I got in fall is Paintshop Pro Ultimate 2019. Of course I'm now being bombarded by upgrade offers to PSP Ultimate 2020... and I'm tempted, except that I'm nowhere close to utilizing the nifty features is the 2019 version!
